我不想出錢 Week04
[start]
複習的部分
又是你，茶壺
程式碼：
#include <GL/glut.h>
#include <stdio.h>
void display()
{
glClear(GL_COLOR_BUFFER_BIT | GL_DEPTH_BUFFER_BIT);
glutSolidTeapot(0.3);
glutSwapBuffers();
}
void mouse( int button, int state, int x, int y)
{
printf("button:%d state:%d x:%d y:%d\n",button, state, x,y);
}
int main(int argc, char ** argv)
{
glutInit(&argc, argv);
glutInitDisplayMode(GLUT_DOUBLE | GLUT_DEPTH);
glutCreateWindow("week04 mouse");
glutDisplayFunc( display );
glutMouseFunc( mouse );
glutMainLoop();
}
按茶壺的邊緣，讓程式碼跑出來
程式碼：
複製上一個小黑框裡的程式，貼到原本的程式裡，再加幾行程式
#include <GL/glut.h>
#include <stdio.h>
void display()
{
glClear(GL_COLOR_BUFFER_BIT | GL_DEPTH_BUFFER_BIT);
glutSolidTeapot(0.3);
glutSwapBuffers();
}
void mouse( int button, int state, int x, int y)
{
if( state==GLUT_DOWN)
{
printf(" glVertex3f( (%d-150)/150.0,-(%d-150)/150.0, 0);\n", x, y);
}
}
int main(int argc, char ** argv)
{
glutInit(&argc, argv);
glutInitDisplayMode(GLUT_DOUBLE | GLUT_DEPTH);
glutCreateWindow("week04 mouse");
glutDisplayFunc( display );
glutMouseFunc( mouse );
glutMainLoop();
}
程式碼：
#include <GL/glut.h>
#include <stdio.h>
void display()
{
glClear(GL_COLOR_BUFFER_BIT | GL_DEPTH_BUFFER_BIT);
//glutSolidTeapot(0.3);
//glutSwapBuffers();
glBegin(GL_POLYGON);
glVertex3f( (140-150)/150.0,-(135-150)/150.0, 0);
glVertex3f( (118-150)/150.0,-(118-150)/150.0, 0);
glVertex3f( (143-150)/150.0,-(148-150)/150.0, 0);
glVertex3f( (208-150)/150.0,-(110-150)/150.0, 0);
glVertex3f( (207-150)/150.0,-(163-150)/150.0, 0);
glVertex3f( (237-150)/150.0,-(156-150)/150.0, 0);
glVertex3f( (206-150)/150.0,-(160-150)/150.0, 0);
glVertex3f( (159-150)/150.0,-(173-150)/150.0, 0);
glVertex3f( (124-150)/150.0,-(179-150)/150.0, 0);
glVertex3f( (106-150)/150.0,-(153-150)/150.0, 0);
glVertex3f( (93-150)/150.0,-(157-150)/150.0, 0);
glVertex3f( (91-150)/150.0,-(138-150)/150.0, 0);
glVertex3f( (111-150)/150.0,-(137-150)/150.0, 0);
glVertex3f( (154-150)/150.0,-(153-150)/150.0, 0);
glVertex3f( (148-150)/150.0,-(110-150)/150.0, 0);
glVertex3f( (156-150)/150.0,-(123-150)/150.0, 0);
glEnd();
glutSwapBuffers();
}
void mouse( int button, int state, int x, int y)
{
if( state==GLUT_DOWN)
{
printf(" glVertex3f( (%d-150)/150.0,-(%d-150)/150.0, 0);\n", x, y);
}
}
int main(int argc, char ** argv)
{
glutInit(&argc, argv);
glutInitDisplayMode(GLUT_DOUBLE | GLUT_DEPTH);
glutCreateWindow("week04 mouse");
glutDisplayFunc( display );
glutMouseFunc( mouse );
glutMainLoop();
}
讓茶壺可以跟箭頭一起動
程式碼：
#include <GL/glut.h>
#include <stdio.h>
float teapotX=0, teapotY=0; /// 茶壺的座標 -1.0.....+1.0
void display()
{
glClear(GL_COLOR_BUFFER_BIT | GL_DEPTH_BUFFER_BIT);
glPushMatrix();
glTranslatef(teapotX,teapotY, 0); ///照著座標，移動
glutSolidTeapot(0.3);
glPopMatrix(); ///矩陣還原
glEnd();
glutSwapBuffers();
}
void motion( int x, int y)
{
teapotX = (x-150)/150.0; ///換算座標
teapotY = -(y-150)/150.0;
display();
}
int main(int argc, char ** argv)
{
glutInit(&argc, argv);
glutInitDisplayMode(GLUT_DOUBLE | GLUT_DEPTH);
glutCreateWindow("week04 mouse");
glutDisplayFunc( display ); ///display顯示函式
glutMotionFunc( motion ); ///準備mouse motion 移動時的函式
//glutMouseFunc( mouse ); ///mouse滑鼠的函式
glutMainLoop();
}
用老師給的檔案練習"旋轉"的概念
以X軸當基準，拿出"右手"去理解旋轉方向(藍線)
以Y軸當基準，拿出"右手"去理解旋轉方向(藍線)
[加課時間]
GitHub做1個新網站
把 main 改成 gh-pages
成功開通自己的網站！(step：settings👉change theme 隨便選一個當背景👉select theme👉最下面更新👉打上自己名字去自己的網站)
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